query: SELECT first_name FROM Professionals UNION SELECT first_name FROM Owners EXCEPT SELECT name FROM Dogs
question: Finding a first name where are used them professional or owner which ain't used a dog name.
query_toks: SELECT first_name FROM Professionals UNION SELECT first_name FROM Owners EXCEPT SELECT name FROM Dogs
query_toks_no_value: select first_name from professionals union select first_name from owners except select name from dogs
question_toks: Finding a first name where are used them professional or owner which ain't used a dog name.